Demonstrative pronoun - A pronoun that points out an intended referent, or replaces a noun when the noun is understood.
Ex. We bought this last year.
I'll take these bags and you take those.
Interogative pronoun - A pronoun used in order to ask a question.
Ex. What did you say? Which is the largest?
Relative pronoun - relates a subordinate clause to the rest of the sentence.
Ex. I cannot believe that he said that.
He who laughs last laughs best.
Indefinite pronoun - a pronoun that replaces a noun without specifying which noun it replaces.
Ex. Everybody went to the ball game. Everything is going wrong today.
Demonstrative pronoun - A pronoun that points out an intended referent, or replaces a noun when the noun is understood.
Ex. We bought this last year.
I'll take these bags and you take those.
Interogative pronoun - A pronoun used in order to ask a question.
Ex. What did you say?
Which is the largest?
Relative pronoun - relates a subordinate clause to the rest of the sentence.
Ex. I cannot believe that he said that.
He who laughs last laughs best.
Indefinite pronoun - a pronoun that replaces a noun without specifying which noun it replaces.
Ex. Everybody went to the ball game.
Everything is going wrong today.
http://www.writingcentre.uottawa.ca/hypergrammar/pronouns.html
http://www.mcwdn.org/grammar/prodemon.html
http://grammar.ccc.commnet.edu/grammar/pronouns1.htm
http://owl.english.purdue.edu/owl/resource/645/01/
http://www.towson.edu/ows/pronouns.htm